Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip III, assayer not visible, Grade 1, certificate missing. KM-9. 12.50 grams. Bold full shield (off-center), full but weaker cross, full denomination, light surface corrosion, spotty toning. With Fisher tag #3186. Recovered from: Santa Margarita, sunk in 1622 west of Key West, Florida
(350 - 500 USD)